Download Gel Molecular Weight Analyzer app from the page and install the app.

This app fits a standard curve to relate the known molecular weights of proteins in a set of standards (y-axis) to their relative migration (x-axis), and estimates molecular weights of unknow proteins. 

Features include:

• Define a lane of standard sample image

• Detect bands and mark their positions or mark them manually

• Fit a standard curve from the standard sample

• Calculate molecular weight of unknown sample by the regression equation